I have lg 55uj6200, when plugged in its in standby to turn on you have press power button multiple time then it flashes 3 times and turns on but no video(flash light test) no backlights no sound.
Powers supply
Stby pwr on
13.5v 12.5v 13.2v
Pwr on 3.5v 3.5v
Pdim .47v .47v
Inv on 0v 0.05v
If i force power supply turn inverter on backlights work no video.
Is it possible trbl shoot backlight inv on circuit on main board or is this case bad bga chip or mainboard?
Powers supply
Stby pwr on
13.5v 12.5v 13.2v
Pwr on 3.5v 3.5v
Pdim .47v .47v
Inv on 0v 0.05v
If i force power supply turn inverter on backlights work no video.
Is it possible trbl shoot backlight inv on circuit on main board or is this case bad bga chip or mainboard?
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